.nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    background-color: rgb(255, 255, 255);
    height: 60px;
    line-height: 40px;
    padding: 10px 20px;
    box-sizing: border-box;
    margin-bottom: 20px;
}

.title2 {
    font-size: 16px;
    font-weight: 800;
}

.img {
    position: relative;
    margin: 5px 100px;
    display: flex;
    justify-content: start;
    .img1 {
        margin-right: 20px;
    }
    .p1 {
        position: absolute;
        left: 50px;
        display: flex;
        align-items: center;
        margin-bottom: 0;
        color: white;
    }
    .p2 {
        position: absolute;
        left: 200px;
        display: flex;
        align-items: center;
        margin-bottom: 0;
        color: white;
    }
}

.content {
    font-size: 22px;
    font-weight: 500;
    .heTongTitle {}
}

.box {
    margin-left: 20px;
    border: 1px solid #ccc;
}

.footer {
    width: 100%;
    height: 100px;
    text-align: center;
    line-height: 100px;
}

.up,
.sub {
    width: 143px;
    height: 35px;
    background-color: rgba(153, 153, 153, 1);
    color: white;
    border: none;
    border-radius: 5px;
    margin-top: 50px;
}

.sub {
    background-color: rgba(51, 51, 51, 1);
}